Describes how to apply solid textures.

Typically, you use solid textures to make an object appear to be carved out of a block of solid material (for example, wood or marble). Solid textures determine the color of a surface based on the XYZ values of each point on the surface. Solid textures are, therefore, not affected by the parameterization of a surface, and do not distort (the way a surface texture does) when mapped to a surface with uneven parameterization.